Arg. Saesneg gwreiddiol = Original English ed: Harlow: Longman, 1992.
Teitl clawr = Cover title.
Cyhoeddwyd dan nawdd Cynllun Adnoddau Cyd-bwyllgor Addysg Cymru = Published under the auspices of the Welsh Joint Education Committee Resources Project.
Sain by Gabrielle Nyman. ISBN 0905345908. Published by Uned Iaith Genedlaethol Cymru CBAC in 1995. Publication and catalogue information, links to buy online and reader comments.